We're dividing 372398 by 71 
The aim is to understand the frequency of 71 in 372398.

Going ahead to step 1:
71 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 71

Advancing to step 2:
If we divide 37 by 71, we get 0 and a remainder of 37.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 71

On to step 3:
The number 71 fits into 372 5 times, leaving a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 355 from 372 and we're left with 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 71

Let's proceed to step 4:
The number 71 fits into 173 2 times, leaving a remainder of 31.
Use 2 as the next digit of our solution. 
Result so far: 52.0
If we subtract 142 from 173, we get 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 71

Going ahead to step 5:
319 divided by 71 is 4 with a remainder of 35.
The next digit of our result is 4. 
Result so far: 524.0
If we subtract 284 from 319, we get 35.
Append the next digit (8) from the dividend to 35 and continue with: 358 / 71

Advancing to step 6:
If we divide 358 by 71, we get 5 and a remainder of 3.
Record the quotient 5 as the next digit in the result. 
Result so far: 5245.0
Subtract 355 from 358 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
71 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 5245.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
71 goes into 300 4 times with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5245.04
Subtract 284 from 300 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 9:
71 can be fit into 160 2 times, resulting in a remainder of 18.
The next digit of our result is 2. 
Result so far: 5245.042
Deduct 142 from 160 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 10:
If we divide 180 by 71, we get 2 and a remainder of 38.
The next digit of our result is 2. 
Result so far: 5245.0422
If we subtract 142 from 180, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

After the division, we end up with 5245.0422 and a remainder of 0.00038.